1. The number of boys and girls in the college are in ratio 3:2. If 20% of the boys and 25% of the girls are adults, then the percentage of the students who are minor is:

82.5%

67.5%

76%

78%

2. Monthly income of two persons are in the ratio 5 : 4 and their expenditures are in the ratio 9 : 7. If each saves ₹ 500 per month, then what are their monthly incomes:

₹ 4500, ₹ 3600

₹ 3500, ₹ 2800

₹ 4000, ₹ 3200

₹ 5000, ₹ 4000

3. The ratio between two numbers is 5 : 3 and difference between their squares is 144. Find the numbers

20, 12

10, 6

15, 9

5, 3

4. A mixture contains milk and water in the ratio of 7: 2. On adding 6 litres of water, the ratio of milk and water becomes 7 : 5. Ther. quantity of water in the final mixture will be:

10 litres

4 litres

12 litres

None of the above

5. If (a+b) : (b+c) : (c+a)= 6 : 7 : 8 and a + b + c =14, then c = ?

14

7

8

6

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